Is it legal for the winning company to commission an agent to collect the owner's payment for the goods?

Not legal! Bidding agent contract in the bidding service fee by whom to pay must be clear, there can be no ambiguity or choice, otherwise, it may lead to the bidding agent company both from the Party A collection, but also from the winning bidder to collect the illegal behavior! The contract from the point of view of the Contract Law, called the "price terms of the agreement is unclear", may lead to the contract is invalid.

The relevant provisions of the bidding agency service fees are mainly "Interim Measures for the Management of Bidding Agency Service Fees" (October 15, 2002, the National Development Planning Commission Price 20021980 issued), in 2003 and 2011, the National Development and Reform Commission, respectively, with the "National Development and Reform Commission". In 2003 and 2011, the National Development and Reform Commission supplemented and modified the Measures with the documents "Notice of the General Office of the National Development and Reform Commission on Issues Relating to Tendering Agency Service Charges" (NDRC Price [2003] No. 857) and "Notice of the National Development and Reform Commission on Issues Relating to Reducing the Fees for Some Construction Projects and Regulating Fee Charging Behavior" (NDRC Price [2011] No. 534), respectively. It is clear that the bidding agent fee can be paid by the bidder or by the winning bidder, but there must be a clear agreement!